Powell, Mark Max Planck Institute for Mathematics, Max Planck Society;
Ray, Arunima Max Planck Institute for Mathematics, Max Planck Society;
Powell, M., & Ray, A. (2021). Gropes, towers and skyscrapers. In S. Behrens, B. Kalmár, M. H. Kim, M. Powell, & A. Ray (Eds.), The disc embedding theorem (pp. 171-184). Oxford: Oxford University Press.